OE Quality
60-Day Returns

Denso 671-6201 Spark Plug Wire Set
Reliable Ignition Wire Set for Nissan Frontier and Xterra
The Denso 7mm Spark Plug Wire Set (Part Number 671-6201) is designed specifically for Nissan Frontier and Xterra models. Engineered to deliver consistent ignition performance, this set ensures optimal spark delivery and engine efficiency.
- Silicone spark plug boot material for heat resistance and durability
- 7.00mm insulation outside diameter for effective electrical insulation
- 90-degree angled spark plug end boots (5 angled, 1 straight) for precise fitment
- Male distributor coil end terminal and female spark plug end terminal for secure connections
About the Denso 7mm Brand Line
The Denso 7mm brand line focuses on ignition wire sets with a 7.00mm insulation diameter, balancing flexibility and durability. This line is designed to meet the specific ignition requirements of various vehicles, including Nissan models, providing reliable electrical insulation and resistance to heat and wear.
Detailed Product Description
This spark plug wire set features silicone PBT silicone boots that offer excellent resistance to heat, oil, and chemicals, which helps maintain performance under demanding engine conditions. The 7.00mm insulation diameter provides effective protection against electrical interference and voltage leaks. The set includes five angled 90-degree spark plug end boots and one straight boot, allowing for proper routing and fitment in Nissan Frontier and Xterra engines. The male distributor coil end terminal and female spark plug end terminal ensure secure and reliable connections, reducing the risk of misfires and ignition issues.
Common Applications and Issues Addressed
- Replacement for worn or damaged spark plug wires in Nissan Frontier and Xterra
- Resolves engine misfires caused by faulty ignition wires
- Improves ignition system reliability and spark delivery
- Prevents voltage leakage and electrical interference
- Maintains engine performance and fuel efficiency
Installation Notes and Tips
When installing the Denso 671-6201 spark plug wire set, ensure the correct routing of the angled and straight boots to avoid contact with hot engine components. Verify that the male distributor coil end terminals and female spark plug end terminals are securely connected to prevent loose connections. It is recommended to replace all wires in the set simultaneously to maintain balanced ignition performance.
Quality Assurance and Warranty
Denso manufactures this spark plug wire set to meet OEM specifications for Nissan Frontier and Xterra vehicles. The use of high-quality silicone materials and precise terminal construction supports long-term durability and consistent performance. Warranty information should be confirmed with the original product documentation or supplier.
| Brand | Denso |
| Part Number | 671-6201 |
| Position | 7mm |
| Bushing Material | 5 |
| Distributor Coil End Terminal Type | Male |
| Insulation Outside Diameter | 7.00 |
| Spark Plug Boot Material | Sil PBT Sil Silicone |
| Spark Plug End Boot Degree | 90 |
| Spark Plug End Boot Quantity Straight | 1 |
| Spark Plug End Terminal Type | FEMALE |
This part fits 5 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2004 | Nissan | Frontier | N/A | 7mm |
| 2004 | Nissan | Xterra | N/A | 7mm |
| 2003 | Nissan | Frontier | N/A | 7mm |
| 2003 | Nissan | Xterra | N/A | 7mm |
| 2002 | Nissan | Frontier | N/A | 7mm |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.